Are the effects of Dermabrasion lasting?

I have huge pores and I'd like to do something to reduce them. I'm looking for something under $500. Is there anything like that?

I had a dermabrasion treatment that left dark markings on my cheeks. How can I correct it and get my skin back to normal?

Or are other tattoo removal methods better?

How deep does dermabrasion go? How do the results compare to strong chemical peels?

I had lipo a few years back. I have 4 scars midway up my back that are large, dimpled and are very noticeable. Also I have deep ance scars in the middle of my chest. Is there something that can be done to help these issues I have?

is this a possible side effect?

What are the potential side effects?

Will scars be completely removed?

I'm considering dermabrasion for the deep lines above my top lip. Will that treatment work for that issue?

Will I have to schedule follow-ups?

My skin reacts negatively to anything that I touch. If i slightly scratch it or my clothes rub onto my skin, it swells up and itches like crazy. My skin rises and tuns red wherever I have scratched. This often happens on my face as well. I wanted to try dermabrasion but given my skin irritation issues, would that be a good idea?